Installation Issue

Disclaimer: I’m not too familiar with Linux…yet

I mucked things up pretty good trying to install the correct version of Ruby, rbenv, etc. So, I re-installed the OS. I was able to install rbenv. I’m still getting the same error. Please see below and also my screen capture.

(I know I have the permissions wide open right now)
You can see, I have installed the correct version of Ruby, 2.4.1 and also that version 2.5.7 isn’t even installed? Why are things so challenging in Linux? So far I have about 6 hours in this. Thanks for your help @rachkor

kali@kali:~$ cd dradis-ce/
kali@kali:~/dradis-ce$ ./bin/setup

== Enabling default add-ons ==
== Installing dependencies ==
./bin/setup:9: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777
Your Ruby version is 2.5.7, but your Gemfile specified 2.4.1
Your Ruby version is 2.5.7, but your Gemfile specified 2.4.1

== Command [“bundle install”] failed ==
kali@kali:~/dradis-ce$ cd …
kali@kali:~$ rbenv install 2.4.1
rbenv: /home/kali/.rbenv/versions/2.4.1 already exists
continue with installation? (y/N) n
kali@kali:~$ rbenv global 2.4.1
kali@kali:~$ rbenv prefix 2.5.7
rbenv: version `2.5.7’ not installed
kali@kali:~$